Public Types¶

typedef _Sequence::const_reference const_reference
typedef _Sequence container_type
typedef _Sequence::reference reference
typedef _Sequence::size_type size_type
typedef _Sequence::value_type value_type

Public Member Functions¶

priority_queue (const _Compare &__x, const _Sequence &__s)
priority_queue (const _Compare &__x=_Compare(), _Sequence &&__s=_Sequence())
template<typename _InputIterator > priority_queue (_InputIterator __first, _InputIterator __last, const _Compare &__x, const _Sequence &__s)
template<typename _InputIterator > priority_queue (_InputIterator __first, _InputIterator __last, const _Compare &__x=_Compare(), _Sequence &&__s=_Sequence())
template<typename... _Args> void emplace (_Args &&... __args)
bool empty () const
void pop ()
void push (const value_type &__x)
void push (value_type &&__x)
size_type size () const
void swap (priority_queue &__pq) noexcept(noexcept(swap(c, __pq.c)) &&noexcept(swap(comp, __pq.comp)))
const_reference top () const

Protected Attributes¶

_Sequence c
_Compare comp

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>>¶

class std::priority_queue< _Tp, _Sequence, _Compare >" A standard container automatically sorting its contents.

Template Parameters:

This is not a true container, but an adaptor. It holds another container, and provides a wrapper interface to that container. The wrapper is what enforces priority-based sorting and queue behavior. Very few of the standard container/sequence interface requirements are met (e.g., iterators).

The second template parameter defines the type of the underlying sequence/container. It defaults to std::vector, but it can be any type that supports front(), push_back, pop_back, and random-access iterators, such as std::deque or an appropriate user-defined type.

The third template parameter supplies the means of making priority comparisons. It defaults to less<value_type> but can be anything defining a strict weak ordering.

Members not found in normal containers are container_type, which is a typedef for the second Sequence parameter, and push, pop, and top, which are standard queue operations.

Note:

Definition at line 370 of file stl_queue.h.

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> std::priority_queue< _Tp, _Sequence, _Compare >::priority_queue (const _Compare & __x, const _Sequence & __s) [inline], [explicit]¶

Default constructor creates no elements.

Definition at line 405 of file stl_queue.h.

References std::queue< _Tp, _Sequence >::c, and std::make_heap().

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> template<typename _InputIterator > std::priority_queue< _Tp, _Sequence, _Compare >::priority_queue (_InputIterator __first, _InputIterator __last, const _Compare & __x, const _Sequence & __s) [inline]¶

Builds a queue from a range.

Parameters:

Begins by copying __s, inserting a copy of the elements from [first,last) into the copy of __s, then ordering the copy according to __x.

For more information on function objects, see the documentation on functor base classes.

Definition at line 445 of file stl_queue.h.

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> bool std::priority_queue< _Tp, _Sequence, _Compare >::empty () const [inline]¶

Returns true if the queue is empty.

Definition at line 471 of file stl_queue.h.

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> void std::priority_queue< _Tp, _Sequence, _Compare >::pop () [inline]¶

Removes first element. This is a typical queue operation. It shrinks the queue by one. The time complexity of the operation depends on the underlying sequence.

Note that no data is returned, and if the first element's data is needed, it should be retrieved before pop() is called.

Definition at line 534 of file stl_queue.h.

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> void std::priority_queue< _Tp, _Sequence, _Compare >::push (const value_type & __x) [inline]¶

Add data to the queue.

Parameters:

This is a typical queue operation. The time complexity of the operation depends on the underlying sequence.

Definition at line 499 of file stl_queue.h.

References std::queue< _Tp, _Sequence >::push(), and std::push_heap().

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> size_type std::priority_queue< _Tp, _Sequence, _Compare >::size () const [inline]¶

Returns the number of elements in the queue.

Definition at line 476 of file stl_queue.h.

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> const_reference std::priority_queue< _Tp, _Sequence, _Compare >::top () const [inline]¶

Returns a read-only (constant) reference to the data at the first element of the queue.

Definition at line 484 of file stl_queue.h.